本国际标准规定了河流和人工渠道流量的测量方法，使用 复合结构中标准堰和/或水槽的任何组合。有关选择堰的指导 和/或水槽，参考ISO 8368。所有结构都可以在模块化流量范围内运行，但只有有限的流量 淹没（非模块化）流量范围内可使用的结构数量（见第4条）。复合堰 提高低水位流量测量的质量。 附录A描述了速度分布的特征。 溺水（非模块化）流量范围内运行的标准化结构及其计算方法 流程如附录B所述。 附录C中给出了流量测量计算的方法和示例。 无分流墩的复合流量测量结构需要现场或模型校准，且不包括在 这是国际标准。

This International Standard specifies the methods of measurement of flow in rivers and artificial channels, using any combination of standard weirs and/or flumes in a compound structure. For guidance on the selection of weirs and/or flumes, refer to ISO 8368. All structures can be operated in the modular flow range, but only a limited number of structures can be used in the drowned (non-modular) flow range (see clause 4). Compound weirs improve the quality of discharge measurements at low stages. The characteristics of velocity distribution are described annex A. Structures standardized for operation in the drowned (non-modular) flow range and the method of computation of flow are described in annex B. Methods and examples of flow measurement calculations are given in annex C. Compound flow-measuring structures without divide piers need in situ or model calibrations and are not covered by this International Standard.